Allen-Bradley 440G-MZ Installation Instructions
Installation Instructions
Actua tor
Switch body
LINK and DEVICE
status indicators
Original Instructions
440G-MZ Guardmaster Safety Switches
Catalog Numbers
Top ic Pa ge
Introduction 1
Installation 2
Commissioning — Unique Coded Models 2
Auxiliary Release 3
Approximate Dimensions 3
Pin Assignment 4
Connection in a GuardLink System 4
Specifications 4
Status Indicators 5
Lock Command 5
Catalog Number Explanation 5
Accessories 5
Additional Resources 5
440G-MZS20SNRJ, 440G-MZS20UNRJ, 440G-MZS20SNLJ, 440GMZS20UNLJ
ATTENTION: Read this document and the documents that
are listed in Additional Resources on page 5 about
installation, configuration, and operation of this equipment
before you install, configure, operate, or maintain this
product. Users are required to familiarize themselves with
installation and wiring instructions, and requirements of all
applicable codes, laws, and standards.
Only suitably trained personnel must perform activities
including installation, adjustments, commissioning, use,
assembly, disassembly, and maintenance in accordance
with applicable code of practice.
If this equipment is used in a manner that the manufacturer
does not specify, the protection that is provided by the
equipment may be impaired.
Introduction
ATTENTION: Do not attempt to install this device unless the
installation instructions have been studied and understood.
This document acts as a guide for a typical installation and
is available in some languages at rok.auto/literature. A user
manual is also available (see Additional Resources on
page 5).
Figure 1 - Assembly Overview
The 440G-MZ Guardmaster® Guard Locking Switch locks a guard door in the closed
position and does not release it until the hazardous machine functions that are
covered by the guard are in a safe condition. The safety control system only allows
the hazardous machine functions to operate when the guard is closed and locked.
Qualified personnel must install the switch in accordance with these instructions.
ATTENTION: This device is intended to be part of the safetyrelated control system of a machine. Before installation, a
risk assessment must be performed to determine whether
the specifications of this device are suitable for all
foreseeable operational and environmental characteristics
of the application. See Specifications on page 4 for
certification information and ratings.
Use appropriate screws, bolts, or nuts that are fitted by tools
to mount the switch and actuators to avoid the risk of
tampering. Do not over torque the mounting hardware.
440G-MZ Guardmaster Safety Switches Installation Instructions
3 x M5
2 x M5
100 (3.94)
1
2
3
White
Gray
NC
Gnd 0V
NC
NC
+24V DC
Blue
Black
Brown
889D-F5NC-x
or
889D-F5BC-x
DEVICE
LINK
Installation
ATTENTION: Do not defeat, tamper, remove, or bypass this
unit. Severe injury to personnel could result.
The presence of spare actuators can compromise the
integrity of the safety systems. Personal injury or death,
property damage, or economic loss can result. Appropriate
management controls, working procedures, and alternative
protective measures should be introduced to control their
use and availability.
Figure 2 - Required Mounting Hardware for Switch and Actuator
IMPORTANT
Washers are not required and if used can cause the
mounting holes on the switch body to crack. If standard
thread locking compound is used on the mounting
screws of the switch body, check the manufacturer’s
specification. Many standard thread-locking compounds
can attack the plastic feet of the switch body, which can
cause stress cracks. It is recommended to use
cyanoacrylate-type thread-locking compounds.
Minimum Distance Between Switches
If a pair of 440G-MZ safety switches are mounted too close to one another, the two
magnetic fields interact causing crosstalk, which results in nuisance faults and
false operation.
A minimum of 100 mm (3.94 in.) must separate a pair of switches to help achieve
correct operation.
This restriction applies to any pair of Guardmaster safety switches that use RFID
sensing technology, including 440N-Z SensaGuard™ interlocks, or TLS-Z and
440G-LZ guard locking switches.
Figure 5 - Minimum Distance between Switches [mm (in.)]
Figure 6 - Three Directions of Approach
Figure 3 - Actuator Function
The flexible actuator bends, rotates, and slides to accommodate guard door
misalignment (Figure 3
). For optimal performance, verify that the locking bolt can
enter and withdraw from the tongue actuator without binding. A separately
mounted door latch is recommended to avoid door misalignment.
Figure 4 - Orientation of Assembled Switch
Commissioning — Unique Coded Models
The actuator teach process is not performed at the factory and must be performed
when the switch is first put into use. After the first-time learn, this process can be
repeated up to seven more times with unique coded replacement actuators.
During commissioning, connect the switch as shown in Figure 7
Figure 7 - Wiring
.
2 Rockwell Automation Publication 440G-IN018B-EN-P - April 2020
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